rustc_plugin: fix compilation
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@ -35,6 +35,8 @@ impl<'v> ItemLikeVisitor<'v> for RegistrarFinder {
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fn visit_impl_item(&mut self, _impl_item: &hir::ImplItem) {
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}
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fn visit_expr_id(&mut self, _: hir::ExprId) { }
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}
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/// Find the function marked with `#[plugin_registrar]`, if any.
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